1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.tools;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | /**
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7 | * Measures elapsed time in milliseconds
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8 | *
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9 | * @see <a href="https://guava.dev/releases/snapshot-jre/api/docs/com/google/common/base/Stopwatch.html">Stopwatch in Guava</a>
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10 | * @since 15755
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11 | */
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12 | public final class Stopwatch {
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13 | private final long start;
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14 |
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15 | private Stopwatch(long start) {
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16 | this.start = start;
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17 | }
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18 |
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19 | /**
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20 | * Creates and starts a stopwatch
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21 | *
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22 | * @return the started stopwatch
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23 | */
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24 | public static Stopwatch createStarted() {
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25 | return new Stopwatch(System.currentTimeMillis());
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26 | }
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27 |
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28 | /**
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29 | * Returns the elapsed milliseconds
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30 | *
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31 | * @return the elapsed milliseconds
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32 | */
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33 | public long elapsed() {
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34 | return System.currentTimeMillis() - start;
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35 | }
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36 |
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37 | /**
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38 | * Formats the duration since start as string
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39 | *
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40 | * @return the duration since start as string
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41 | * @see Utils#getDurationString(long)
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42 | */
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43 | @Override
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44 | public String toString() {
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45 | // fix #11567 where elapsedTime is < 0
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46 | return Utils.getDurationString(Math.max(0, elapsed()));
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47 | }
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48 |
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49 | /**
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50 | * Formats the given task name and duration since start as i18n string
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51 | * @param taskName the task name
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52 | * @return the task name and duration since start as i18n string
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53 | */
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54 | public String toString(String taskName) {
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55 | return tr("{0} completed in {1}", taskName, toString());
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56 | }
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57 | }
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